A quick note tonight, hopefully with a longer post to follow this weekend…
I’ve been frustrated by the people behind the Wisconsin PDMP, or Prescription Drug Monitoring Program, for their mistakes related to buprenorphine. Whoever came up with the numbers made a rookie error when calculating the equivalent morphine dose of patients taking buprenorphine products. The error is easy to notice by anyone who works with the drug, but apparently difficult to grasp by anyone with the power to correct the database figures.
Those people include, by the way, the folks at Brandeis University who give the numbers to Wisconsin, and the people at the CDC who give them to Brandeis. I’ve written to all of them; the bright folks at the CDC skimmed my explanation of their error and responded with a form-email that provides a link to where I can get ‘answers to my questions’.
In short, the people doing the calculation take a low dose of buprenorphine– say 200 micrograms– and extrapolate out in a straight line to 16 mg, ignoring the ceiling effect of partial agonists like buprenorphine. The calculation causes the PDMP to display a graph showing that people on buprenorphine are on the equivalent of 1200 mg of morphine. Any physician who sees that data (and all WI physicians are required by law to use the PDMP effective April 1) will think that the buprenorphine patient needing post-op pain is on THAT dose of opioids. Talk about an April Fool’s joke– nothing like hypoxia in the recovery room to brighten everyone’s mood! Don’t worry though– in their email they pointed out the disclaimer in fine print that the site shouldn’t actually be used to compare or convert opioid doses.
Then why make the calculation and show the graph, asks Mr. Obvious?!
This is getting longer than I intended… Another annoying State tidbit is the series of letters to Wisconsin physicians warning about the severe risk of harm from prescribing benzodiazepines to patients on buprenorphine. I’ve written to those folks as well, pointing out that combinations of benzodiazepines with opioid agonists are much, much, much more dangerous than with buprenorphine. I’ve explained how somehow, sometime long ago, the phrase ‘buprenorphine can only cause death in adults if given to someone without opioid tolerance AND combined with a second respiratory depressant, to which the person also lacks tolerance’ (a true statement) was changed to ‘buprenorphine is dangerous when combined with benzodiazepines’ (mostly ‘fake news’).
I haven’t written as many letters over this second issue because I’m no big fan of benzodiazepines. But both issues annoy me greatly, maybe because the errors of logic in both cases are SO obvious. Even for government work!!
Speaking of government work, the Milwaukee County Common Council released figures about the surge in overdose deaths, including a breakdown by ethnicity, age, county region, and drugs found at autopsy. Mr. Obvious has a question for the people writing to doctors to tell them about the SEVERE risks from buprenorphine: ‘What drug is NOT on the list of the 8 most-common drugs found in toxicology tests of overdose patients?’ A hint: It starts with a ‘B’!